Aphrodita aculeata

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File:Aphrodita aculeata.jpg
Dorsal view, removed from water

Aphrodita aculeata, the sea mouse, is a marine polychaete worm found in the North Atlantic Ocean and the North, Baltic, and Mediterranean Seas. The sea mouse normally lies buried head-first in the sand. It has been found at depths over Script error: No such module "convert"..[1]

Etymology

The name of the genus is taken from Aphrodite, the Ancient Greek goddess of love, said to be because of the worm's supposed resemblance to human female genitalia.[2] The English name may derive from the resemblance to a bedraggled house mouse when washed up on shore.[3] The specific name aculeata is the Latin for spiny.

Description

The body of the sea mouse is covered in a dense mat of setae (hairlike structures).[4] Adults generally fall within a size range of Script error: No such module "convert"..

Structural coloration

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The spines, or setae,[4] on the scaled back of the sea mouse are some of its unique features. Normally, these have a deep red sheen, warning off predators, but when light shines on them perpendicularly, they flash green and blue, a "remarkable example of photonic engineering by a living organism". This structural coloration is a defense mechanism, giving a warning signal to potential predators. The effect is produced by many hexagonal cylinders within the spines, which "perform much more efficiently than man-made optical fibres".[5]

Feeding

The sea mouse is an active predator[1] feeding primarily on small hermit and other crabs, and other polychaete worms, including Pectinaria and Lumbriconereis.[1] It has been observed consuming other polychaete worms over three times its own body length.[1] Feeding activity takes place at night, with the animal is partially buried in sand.[1]

References

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External links

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